Added 9 October 2026 christianity noun Categories: Mind & IdeasSocietyEveryday Words noun ! Definition from Wiktionary (CC BY-SA). More about christianity at Wordnik → Where our words come from → Obsolete form of Christianity. Related Words: christendomchurchchristchristianevangelicalprotestantismprotestantecumenicalchristianscristiana Back to today's word